The Asus Ve278n has a maximum contrast ratio of 50000000:1. That's over two times the contrast ratio of the most common dynamic contrast ratio of 20000000:1. Across all flatpanel monitors of a comparable type and age to the Ve278n the best contrast ratio is 100000000:1 and the worst is Mega Contrast.
We think you might also be interested in some of the alternative LCD screens that have a 50000000:1 dynamic contrast ratio currently available including the AOC i2476 (£104.99) which has a better Rating.
If the contrast ratio of this PC screen is too low for you then you might also want to look at the VG248QE (£185.99) (80000000:1), the MX239H (£166.37) (80000000:1), or the PA248QJ (£400.84) (80000000:1) all from Asus which also has a higher Rating.